| vitamin u | <chemical> A vitamin found in green vegetables. It is used in the treatment of peptic ulcers, colitis, and gastritis and has an effect on secretory, acid-forming, and enzymatic functions of the intestinal tract. Pharmacological action: anti-ulcer agents, gastrointestinal agents. Chemical name: Sulfonium, (3-amino-3-carboxypropyl)dimethyl-, chloride, (S)- (12 Dec 1998) |
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| vitamins | For the various vitamins see Vitamins. The word vitamin was coined in 1911 by the warsaw-born biochemist casimir funk (1884-1967). at the lister institute in london, funk isolated a substance that prevented nerve inflammation (neuritis) in chickens raised on a diet deficient in that substance. He named the substance vitamine because he believed it was necessary to life and it was a chemical amine. The e at the end was later removed when it was recognised that vitamins need not be amines. The letters (a, b, c and so on) were assigned to the vitamins in the order of their discovery. The one exception was vitamin k which was assigned its k from koagulation by the danish researcher henrik dam. (12 Dec 1998) |
| vitellarium | In cestodes and trematodes, a common chamber receiving vitelline (yolk) material from the two vitelline ducts; the yolk material then passes into the ootype to surround the ovum with nutritive vitelline granules that are enclosed by a characteristically formed eggshell. Synonym: vitelline reservoir. (05 Mar 2000) |
| vitellary | <biology> Vitelline. Origin: L. Vitellus a little calf, the yolk of an egg. Source: Websters Dictionary (01 Mar 1998) |
| vitelliform | Relating to or resembling the yolk of an egg. (05 Mar 2000) |
| vitelliform degeneration | Degeneration in Best's disease, with the macular region of each eye occupied by a bright orange-yellow circular deposit resembling an egg yolk, followed by scarring; autosomal dominant inheritance. Synonym: vitelliruptive degeneration. (05 Mar 2000) |
| vitelligenous | <zoology> Producing yolk, or vitelline substance; applied to certain cells (also called nutritive, or yolk, cells) formed in the ovaries of many insects, and supposed to supply nutriment to the developing ova. Source: Websters Dictionary (01 Mar 1998) |
| vitellin | <protein> most abundant protein in egg yolk. (18 Nov 1997) |
| vitellin-degrading protease | <enzyme> Has high homology to trypsin-like proteases Registry number: EC 3.4.21.- Synonym: vtn protease 30k, vtn protease 24k (26 Jun 1999) |
| vitelline | <biology> Of or pertaining to the yolk of eggs; as, the vitelline membrane, a smooth, transparent membrane surrounding the vitellus. Origin: L. Vitellus the yolk of an egg. Source: Websters Dictionary (01 Mar 1998) |
| vitelline artery | <anatomy, artery> An artery carrying blood to the yolk sac from the embryo. Synonym: arteria vitellina. (05 Mar 2000) |
| vitelline cord | A persistent yolk stalk in the form of a solid cord of tissue connecting ileum to umbilicus. Synonym: omphalomesenteric cord. (05 Mar 2000) |
| vitelline duct | The narrow tube connecting the yolk sac with the midgut of the embryo; persistence of all or part of it in post-foetal life produces abnormalities, of which the commonest is meckel's diverticulum. (12 Dec 1998) |
| vitelline fistula | A fistula between the umbilicus and the terminal ileum along the course of a persistent vitelline cord. See: Meckel's diverticulum. (05 Mar 2000) |
| vitelline layer of egg | <zoology> The membrane, usually of protein fibres, immediately outside the plasmalemma of the ovum and the earlier stages of the developing embryo. Its structure and composition vary in differing animal groups. (18 Nov 1997) |
Synonyms : Microvitellogenin, Vitellogenin, Vitellogenin II
Synonyms : Chasteberry Tree, Chastetree
Synonyms :
Synonyms :
Synonyms : Vitrectomies
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| vitamin B |
B-complex vitamin: originally thought to be a single vitamin but now separated into several B vitamins
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| vitamin B12 |
a B vitamin that is used to treat pernicious anemia
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| vitamin B2 |
a B vitamin that prevents skin lesions and weight loss
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| vitrification |
a vitrified substance; the glassy result of being vitrified the process of becoming vitreous
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| vitriol |
(H2SO4) a highly corrosive acid made from sulfur dioxide; widely used in the chemical industry expose to the effects of vitriol or injure with vitriol subject to bitter verbal abuse vituperation: abusive or venomous language used to express blame or censure or bitter deep-seated ill will
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| Vit | native grape of southeastern United States |
|---|---|
| Vit | common European grape cultivated in many varieties |
| Vit | (of ceramics) having the surface made shiny and nonporous by fusing a vitreous solution to it |
| Vit | relating to or resembling or derived from or containing glass |
| Vit | of or relating to or constituting the vitreous humor of the eye |
| Vit | the clear colorless transparent jelly that fills the posterior chamber of the eyeball |
| Vit | the clear colorless transparent jelly that fills the posterior chamber of the eyeball |
| Vit | the clear colorless transparent jelly that fills the posterior chamber of the eyeball |
| Vit | colorless glass made of almost pure silica |
| Vit | the process of becoming vitreous |
| Vit | a vitrified substance |
| Vit | (of ceramics) having the surface made shiny and nonporous by fusing a vitreous solution to it |
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